The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1984
Filed:
Dec. 20, 1982
William H McNeill, Carlisle, MA (US);
Yung J Chen, Weston, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
An electrooptic device for controlling the intensity of a monochromatic light beam comprises a transparent element having opposed planar surfaces operable to reflect a collimated light beam alternately from the two surfaces. A plurality of semiconductor structures contact one surface of the device at regions where the collimated light beam reflects from that surface. Each semiconductor structure includes a thin layer of a material such as a metal in contact with the planar surface of the transparent element and a semiconductor material adjacent to the metal layer. A voltage source provides a potential between the metal layer and the semiconductor material of each structure to separately alter the charge density in the semiconductor material of each structure to affect the degree of coupling between the light beam entering the device and surface plasmon waves generated within each structure. The device is operable as a signal mixer or an optical logic switching device.